Piston Ring, Engine

Piston Ring Gap:
Top Ring:
Standard 0.20 - 0.35 mm (0.0079 - 0.0138 inch)
Limit 1.0 mm (0.039 inch)
Second Ring:
Standard 0.37 - 0.52 mm (0.0146 - 0.0205 inch)
Limit 1.0 mm (0.039 inch)
Oil Ring:
Standard 0.20 - 0.60 mm (0.0079 - 0.0236 inch)
Limit 1.5 mm (0.059 inch)
Clearance Between Piston Ring And Piston Ring Groove:
Top Ring:
Standard 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Limit 0.15 mm (0.0059 inch)
Second Ring:
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.15 mm (0.0059 inch)